mirror of
https://github.com/mikecarper/MeshCore.git
synced 2026-09-26 15:17:54 +00:00
89 lines
3.3 KiB
Python
89 lines
3.3 KiB
Python
"""Avoid Bluefruit's unstable live CCCD persistence on nRF52 Full Companions.
|
|
|
|
The pinned core saves every bonded CCCD write from its callback worker into
|
|
InternalFS. On a T1000-E Full Companion this reproducibly resets the radio as
|
|
the client enables notifications, even after formatting InternalFS. Bond-key
|
|
persistence still works. The Companion keeps recent CCCD state in RAM across
|
|
BLE reconnects, without a live flash write.
|
|
Patch a private build copy; never edit PlatformIO's shared framework cache.
|
|
"""
|
|
|
|
from pathlib import Path
|
|
|
|
|
|
OLD_SAVE = """ {
|
|
conn->saveCccd();
|
|
}
|
|
"""
|
|
FIXED_SAVE = """ {
|
|
#if !defined(COMPANION_RADIO_FULL) || !COMPANION_RADIO_FULL
|
|
conn->saveCccd();
|
|
#endif
|
|
}
|
|
"""
|
|
OLD_LOAD = " if ( !loadCccd() ) sd_ble_gatts_sys_attr_set(_conn_hdl, NULL, 0, 0);\n"
|
|
FIXED_LOAD = """#if defined(COMPANION_RADIO_FULL) && COMPANION_RADIO_FULL
|
|
if ( !mesh_nrf52_restore_ram_cccd(_conn_hdl, &_bond_id_addr) &&
|
|
!loadCccd() )
|
|
{
|
|
sd_ble_gatts_sys_attr_set(_conn_hdl, NULL, 0, 0);
|
|
}
|
|
#else
|
|
if ( !loadCccd() ) sd_ble_gatts_sys_attr_set(_conn_hdl, NULL, 0, 0);
|
|
#endif
|
|
"""
|
|
OLD_CONNECTION_INCLUDE = '#include "bluefruit.h"\n'
|
|
FIXED_CONNECTION_INCLUDE = """#include "bluefruit.h"
|
|
|
|
#if defined(COMPANION_RADIO_FULL) && COMPANION_RADIO_FULL
|
|
bool mesh_nrf52_restore_ram_cccd(uint16_t conn_handle,
|
|
const ble_gap_addr_t* peer);
|
|
#endif
|
|
"""
|
|
|
|
|
|
def patched_source(source):
|
|
source = source.replace("\r\n", "\n")
|
|
if FIXED_SAVE in source and OLD_SAVE not in source:
|
|
return source
|
|
if source.count(OLD_SAVE) != 1:
|
|
raise RuntimeError(
|
|
"nRF52 BLE CCCD fix: unrecognized framework source; review before building"
|
|
)
|
|
return source.replace(OLD_SAVE, FIXED_SAVE)
|
|
|
|
|
|
def patched_connection_source(source):
|
|
source = source.replace("\r\n", "\n")
|
|
if FIXED_LOAD in source and FIXED_CONNECTION_INCLUDE in source:
|
|
return source
|
|
if source.count(OLD_LOAD) != 1 or source.count(OLD_CONNECTION_INCLUDE) != 1:
|
|
raise RuntimeError(
|
|
"nRF52 BLE CCCD fix: unrecognized BLEConnection source; review before building"
|
|
)
|
|
return source.replace(OLD_CONNECTION_INCLUDE, FIXED_CONNECTION_INCLUDE).replace(
|
|
OLD_LOAD, FIXED_LOAD
|
|
)
|
|
|
|
|
|
def replace_framework_source(build_env, node):
|
|
source = Path(node.srcnode().get_abspath())
|
|
if source.name not in ("BLEGatt.cpp", "BLEConnection.cpp") or source.parent.name != "src":
|
|
return node
|
|
original = source.read_text(encoding="utf-8")
|
|
patched = (patched_source(original) if source.name == "BLEGatt.cpp"
|
|
else patched_connection_source(original))
|
|
build_env.AppendUnique(CPPPATH=[str(source.parent)])
|
|
destination = Path(build_env.subst("$BUILD_DIR")) / "patched-nrf52-ble" / source.name
|
|
destination.parent.mkdir(parents=True, exist_ok=True)
|
|
if not destination.exists() or destination.read_text(encoding="utf-8") != patched:
|
|
destination.write_text(patched, encoding="utf-8")
|
|
print(f"nRF52 BLE: Full Companion CCCD workaround in {source.name}")
|
|
return build_env.File(str(destination))
|
|
|
|
|
|
if "Import" in globals():
|
|
Import("env")
|
|
env.AddBuildMiddleware(replace_framework_source, "*BLEGatt.cpp")
|
|
env.AddBuildMiddleware(replace_framework_source, "*BLEConnection.cpp")
|